216011060661 has 32 divisors (see below), whose sum is σ = 325479813120. Its totient is φ = 126244857600.

The previous prime is 216011060659. The next prime is 216011060693. The reversal of 216011060661 is 166060110612.

216011060661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216011060661 - 2¹ = 216011060659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216011060651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83556 + ... + 662573.

It is an arithmetic number, because the mean of its divisors is an integer number (10171244160).

Almost surely, 2^216011060661 is an apocalyptic number.

It is an amenable number.

216011060661 is a deficient number, since it is larger than the sum of its proper divisors (109468752459).

216011060661 is a wasteful number, since it uses less digits than its factorization.

216011060661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746457.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 216011060661 in words is "two hundred sixteen billion, eleven million, sixty thousand, six hundred sixty-one".